This informational draft describes the DPAC (Data Packet AccessControl) framework, potentially under PANA, to efficiently control"data packets" to access the network. Instead of using potentiallymore expensive crypto-based mechanisms such as IPSec (layer 3) or IEEE802.11i (layer 2), DPAC introduces the possibility of using andnegotiating a range of light-weight per-data-packet sourceauthentication methods to control the data packets from PANA Clients(PaC). In DPAC, each data packet sent from PaCs to Enhanced Point (EP)can be classified, with high probability, as either valid or invalid.Furthermore, under this framework, it is possible for EP and PAA toaccount reliably on the network usage of each PaC.